European Commission president Jose Manuel Barroso and Italian Prime Minister Enrico Letta were heckled by activists and local residents with shouts of \"Disgrace!\" and \"Killers!\" as they arrived on the refugee island of Lampedusa  on Wednesday. \"They should be ashamed of themselves! They should solve this humanitarian problem!\" one protester said at the fence of the local airport on an outcrop where over 300 migrants died last week.